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cstool/identstrings.h

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00001 /*
00002     Copyright (C) 2004 by Jorrit Tyberghein
00003               (C) 2004 by Frank Richter
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public
00016     License along with this library; if not, write to the Free
00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 */      
00019 
00020 #ifndef __CS_CSTOOL_IDENTSTRINGS_H__
00021 #define __CS_CSTOOL_IDENTSTRINGS_H__
00022 
00023 #include "csutil/csstring.h"
00024 
00032 class csIdentStrings
00033 {
00034 public:
00035   struct csIdentString
00036   {
00037     int ident;
00038     const char* str;
00039   };
00040 protected:
00041   const csIdentString* strings;
00042   size_t stringCount;
00043   csString* scratch;
00044 public:
00045   csIdentStrings (const csIdentString* str, csString* scratch, size_t cnt) :
00046     strings(str), stringCount(cnt), scratch(scratch) { }
00052   const char* StringForIdent (int ident)
00053   {
00054     size_t l = 0, r = stringCount;
00055     while (l < r)
00056     {
00057       size_t m = (l+r) / 2;
00058       if (strings[m].ident == ident)
00059       {
00060         return strings[m].str;
00061       }
00062       else if (strings[m].ident < ident)
00063       {
00064         l = m + 1;
00065       }
00066       else
00067       {
00068         r = m;
00069       }
00070     }
00071     scratch->Format ("%d", ident);
00072     return scratch->GetData();
00073   }
00074 };
00075 
00092 #define CS_IDENT_STRING_LIST(ListName)                                  \
00093   static const csIdentStrings::csIdentString ListName##_strings[] = {
00094 
00098 #define CS_IDENT_STRING(Ident)                          {Ident, #Ident},
00099 
00103 #define CS_IDENT_STRING_EXPLICIT(Ident, Str)            {Ident, str},
00104 
00107 #define CS_IDENT_STRING_LIST_END(ListName)                              \
00108     {0, 0}                                                              \
00109   };                                                                    \
00110   CS_IMPLEMENT_STATIC_VAR(Get##ListName##Scratch, csString, ())         \
00111   static csIdentStrings ListName (ListName##_strings,                   \
00112     Get##ListName##Scratch(),                                           \
00113     (sizeof (ListName##_strings) / sizeof (csIdentStrings::csIdentString)) - 1);
00114 
00115 #endif // __CS_CSTOOL_IDENTSTRINGS_H__

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